Remove linux x86 from HW video decode black list

gpu/config/software_rendering_list_json.cc

Index: gpu/config/software_rendering_list_json.cc
diff --git a/gpu/config/software_rendering_list_json.cc b/gpu/config/software_rendering_list_json.cc
index 23c8ac045453071b63eb85517a8707cef6163d35..b1165409fb1e9e241080c27da4414db699e7d6ff 100644
--- a/gpu/config/software_rendering_list_json.cc
+++ b/gpu/config/software_rendering_list_json.cc
@@ -543,8 +543,8 @@ const char kSoftwareRenderingListJson[] = LONG_STRING_CONST(
     },
     {
       "id": 48,
-      "description": "Accelerated video decode is unavailable on Mac and Linux",
-      "cr_bugs": [137247, 133828],
+      "description": "Accelerated video decode is unavailable on Mac",
+      "cr_bugs": [133828],
       "exceptions": [
         {
           "os": {
@@ -553,6 +553,11 @@ const char kSoftwareRenderingListJson[] = LONG_STRING_CONST(
         },
         {
           "os": {
+            "type": "linux"
+          }
+        },
+        {
+          "os": {
             "type": "win"
           }
         },